 | International Correspondence Schools - 1897 - 346 páginas
...Engine. Let P = Mean effective pressure in pounds per square inch on the piston during one stroke. L = Length of stroke in feet. A = Area of piston in square inches. N = Number of strokes per minute. D = Diameter of piston in inches. Then, to find the indicated horsepower, PLAN... | |
 | Edward Sherman Gould - 1897 - 116 páginas
...Also, H. p. = PLD*NX 0.000048. (27) HP = PID^NX 0.000004. (28) In which P = mean effective pressure per square inch ; L = length of stroke in feet ; A = area of piston in square inches, JV — number of revolutions per minute ; D = diameter of piston in inches ; / = length of stroke in... | |
 | 1899 - 676 páginas
...57.72 pounds per square inch. = 56.8. say. JPX LXAX A" Horsepower where P=mean effective pressure (MEP) in pounds per square inch ; L = length of stroke in...= area of piston in square inches ; N = number of strokes per minute — number of revolutions multipled by 2. Substituting the proper values for the... | |
 | Stephen Roper - 1899 - 408 páginas
...write the above rule in the shape of a formula ? A. Let HP = horse-power, P = mean effective pressure in pounds per square inch, L = length of stroke in...A = area of piston in square inches, N = number of strokes per minute, R = number of revolutions per minute, S = piston speed in feet per minute, d =... | |
 | 1899 - 730 páginas
...33,000 ' In which /' — mean (average) effective pressure of steam in cylinder in Ib. per sq. In.; L -= length of stroke in feet ; A = area of piston in square inches : N — number of strokes per minute. The mean effective pressure 1' may be found by Dieansof an indicator diagram, or... | |
 | Stephen Roper - 1900 - 330 páginas
...horse-power ? , „ , PLAN . , . , A. Horse-power equals -^-^^r , m which P = mean effective pressure in pounds per square inch, L = length of stroke in...A = area of piston in square inches, N = number of strokes per minute. Q. Having given the diameter of the cylinder, how would you calculate the area... | |
 | John S. Reid - 1900 - 502 páginas
...Dia,neter of Cylinder, D. Let P = the mean effective pressure of steam in pounds per square inch = MEP; L = length of stroke in feet; A = area of piston in square inches; N = number of strokes per minute. PLAN Then -- - • • - = IHP or indicated horse-power, and 33000 IHPx 33000 A... | |
 | John Simpson Reid, David Reid - 1900 - 432 páginas
...Diameter of Cylinder, D. Let P — the mean effective pressure of steam in pounds per square inch = MEP ; L = length of stroke in feet ; A — area of piston in square inches; yV= number of strokes per minute. , PLAN Ihen = IHr or 1nd1cated horse-power, and 11 t IHP X 33Ooo... | |
 | William Kent - 1902 - 1204 páginas
...Indicated Horse-power IHP= •,, oo,000 in which P = mean effective pressure in Ibs. per sq. in. ; L = length of stroke in feet; a = area of piston in square inches. For accuracy, one half of the sectional area of the piston-rod must be subtracted from the area of... | |
 | William Kent - 1907 - 1206 páginas
...following method is given by Prof. Carpenter \L'ower, bept. 1H93): p — mean effective pressure, I = length of stroke in feet, a = area of piston in square inches, a -*- 144 = area in square feet, c = percentage of clearance to the stroke, b = percentage of stroke... | |
| |
The horse power of a steam engine is given by the equation , plan = ~ where p = mean effective pressure in pounds per square inch, l = length of stroke in feet, a = area of piston in square inches, n = number of strokes per minute, or twice the number... 
